Drilling and geophysical logs were used to characterize the geohydrologic framework and the freshwater and saline-water zones penetrated by the tophole at an oil-and-gas well site in central Venango County, Pennsylvania

Specific publications are summarized in this document, spanning efforts across the Nation, including in the Marcellus Shale in the east, Bakken in the north-central, and Fayetteville Shale in the Southeast

In a paper published in the current issue of the Journal of Unconventional Oil and Gas Resources researchers report injected water that remains underground is sequestered in the rock formation and therefore

The Maryland Geological Survey (MGS) and the United States Geological Survey (USGS) are developing a water monitoring program to evaluate ground-water and surface-water resources in the Maryland Appalachian Plateau